Motorola and sunglass maker Oakley are coming out with a line of combination sunglasses/cell-phone headsets, called Razrwire, that lets you carry on phone conversations while up to 30 feet away from a Bluetooth-enabled cell phone. The companies say that one obvious use for Razrwires is driving. Razrwire will be available for purchase in early August at select Cingular Wireless retail stores and online for $295.